Three-phase cost control intelligent electric meter with code scanning transaction function

The utility model discloses a three-phase cost control intelligent electric meter with a code scanning transaction function. The ammeter comprises a housing, an antenna, a display screen, an indicating lamp, a CPU card slot, a button and a wiring terminal. The antenna is located on the upper right portion of the outer shell, the display screen is located on the upper portion of the outer shell, arow of three indicator lights are further arranged below the display screen, the keys are located in the middle of the outer shell, the wiring terminal is located below the outer shell, and the keys comprise ten number keys, a decimal point key, a backspace key, four direction keys, a confirm key and a cancel key. The internal structure of the ammeter comprises an ARM processor, a power supply unit, a clock unit, a metering unit, a storage unit, an alarm unit, a display screen control unit, a 4G communication module unit, a relay control unit, a key input unit, a CPU card unit, an embedded safety control unit and an e